Cylinder for grain-scourers



(No Model.)

J. CHASE.

CYLINDER FOR GRAIN SCOURER$.

No. 288,809. Patented Nov. 13, 1883.

QQ-EQ} v wxjduuukr i Fig. 5

PATENT FFICE.

JOHN H. CHASE, OF ROCHESTER, NEW YORK.

CYLINDER FOR G RAIN-SCOURERS.

SPECIFQIGATION forming part of Letters Patent NO. 288,309, dated November 13, 1883.

Application filed September 3, 1883. (No model.)

To all whom it may concern:

Be it known that 1, JOHN H. CHASE, of Rochester, New York, have invented an Improved Cylinder for Grain-Scourers, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to an improved cylinder for grain-scouring machines, which improvement is hereinafter fully described and claimed.

My invention is represented in the accompanying drawings, in which Figure lis a partial horizontal section of a grainscouring machine containing my improved cylinder. Fig. 2 is a representation of a portion of my improved cylinder as seen from the inside. Fig. 3 is a section on the line y, Fig. 2. Fig. 4. is a section on the line .2 2, Fig. 2. Fig. 5 is a section on the line a m, Fig. 2.

In the accompanying drawings, A represents my improved cylinder; B B, revolving brushes within the cylinder; 0, boaters; E, the outer casing, and F the shaft carrying the brushes or heaters.

My improved cylinder for grain-scourers'is provided on its inner surface with a series of alternately-arranged rounded or nearly spherical knobs or projections and depressions or cavities, the projections being indicated in the accompanying drawings by the letter Z and the cavities by the letter 0. Each of the cavities is provided with'a small central opening, 1', through which the scourings or refuse ma terial removed from the grain by the operation of the machine is drawn by a current of air induced by an exhaust-fan, which serves to produce a partial vacuum in the annular space between the cylinder A and the casing E. As indicated in the drawings, the rows of projections are arranged alternately, with the rows of cavities in both the horizontal and vertical directions; but if the rows be considered diagonally, the projections alternate with the depressions in the same row, as represented in Fig. 5. The consequence of this arrangement is that as the grain falls from the top to the bottom of the cylinder, while being swept around its interior by the revolution of the heaters or brushes, it is effectually subjected on its whole surface to the scouring or cleansing action, the kernels of grain being turned over or ended up by contact with the knobs or cavities, so that its ends are thoroughly scoured-a result which is not satisfactorily accomplished by the grain-scouring machines heretofore in use. The surface of the cylinder where it joins the edges of the cavities 1s rounded over, or given such a curved form as to avoid any sharp ridges or lines which might break the husk or outer covering of the grain.

ties, so that the grain is prevented from sliding along the inside of the cylinder; but the dimensions may be varied somewhat without materially affecting the operation of the machine. In consequence of the alternate arrangement of the rows of knobs and cavities the grain is deflected from a straight course by striking against the knobs and caused to pass through the cavities. The edges of the openings a" 1" in the cavities in the interior surface of the cylinder scour the ends of the kernels of the grain.

Hy improved cylinder for grain-scourers may be made of either cast or sheet metal. I prefer, however, to form it from sheet metal, the knobs, cavities, and openings being stamped in it by suitable dies and punches. It may be made in one piece, or in sections bent to the proper cylindrical form and j oined together by the angle-plates D, Fig. 1, which are riveted to the cylinder and suitably secured together.

My improved cylinder for grain-scourers may be used in connection with any form of machine constructed for this purpose. The frame-Work of the machine, the devices for feeding the grain into and discharging it from the cylinder, the mechanism for actuating the brushes or heaters, and for connecting and operating the exhaust apparatus may be of any usual or preferred construction.

I claim- A cylinder for grain-scouring machines,

provided on itsinner surfacewith the alternately arranged imperforate round projections Z Z and round depressions o 0, having perforations r r, substantially as and for the purposes set forth.

- JOHN H. CHASE.

Witnesses:

GEO. B. SELDEN, Z. L. DAVIS. 

